Gas pump



FIG. 1 is a front elevational view of a gas pump showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line lettering in FIGS. 1 and 2 is for illustrative purposes only, and forms no part of the claimed design. 

The ornamental design for a gas pump, as shown and described. 